Viendo archivo del jueves, 17 septiembre 1998
Informe actividad solar
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Informe de actividad Solar-Geofísica 1998 Sep 17 2200 UTCPreparado por NOAA © SWPC y procesado por SpaceWeatherLive.com
Informe conjunto USAF/NOAA de actividad Solar y Geofísica
SDF Número 260 Publicado el 2200Z a las 17 SEP 1998IA. Análisis de regiones solares activas y de actividad desde 16-2100Z hasta 17-2100Z SOLAR ACTIVITY HAS BEEN VERY LOW FOR THE PAST 24 HOURS.
TWO NEW REGIONS WERE NUMBERED: REGION 8339 (S17E42), A B-TYPE SPOT
GROUP, AND REGION 8340 (N20E76), A SINGLE H-TYPE SPOT WHICH IS THE
QUIET RETURN OF OLD ACTIVE REGION 8319. REGION 8319 PRODUCED FIVE
M-CLASS FLARES DURING ITS LAST ROTATION. NUMEROUS TYPE III RADIO
SWEEPS WERE REPORTED THROUGHOUT THE DAY, AS WELL AS A RADIO NOISE
STORM AT 410 MHZ BEGINNING AT 1839 UT. MINOR SURGING ACCOMPANIED THE
EAST LIMB APPEARANCE OF REGION 8340. THE REMAINDER OF THE LIMBS,
AND THE DISK, WERE QUIET.
IB. Pronóstico de la actividad solar
SOLAR ACTIVITY IS EXPECTED TO BE LOW
BASED ON EXPECTATIONS OF C-CLASS FLARES FROM REGIONS DEVELOPING IN
ACTIVE LONGITUDES IN THE EASTERN SOLAR HEMISPHERE. ISOLATED M-CLASS
FLARES ARE POSSIBLE.
IIA. Resumen de la actividad geofísica 16-2100Z a 17-2100Z
THE GEOMAGNETIC FIELD HAS BEEN QUIET FOR THE PAST 24 HOURS.
IIB. Pronóstico de la actividad geofísica
GEOMAGNETIC ACTIVITY IS
EXPECTED TO PERSIST AT QUIET LEVELS TOMORROW, BUT INCREASE FROM
QUIET TO UNSETTLED LEVELS IF THE SOLAR WIND CHANGES FROM ITS PRESENT
STATE OF LOW SPEEDS, NORMAL DENSITIES, AND NORMAL MAGNETIC FIELD
INTENSITIES. HIGHER SPEEDS AND FLUCTUATING MAGNETIC FIELDS
ASSOCIATED SMALL DISAPPEARING FILAMENTS, OR FROM A POSITIVE
NORTHERN CORONAL HOLE SHOULD ARRIVE AT EARTH DURING THE 3-DAY
FORECAST PERIOD.
III. Probabilidades del evento 18 SEP a 20 SEP
| Clase M | 10% | 10% | 10% |
| Clase X | 01% | 01% | 01% |
| Protón | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7cm flujo
Observado 17 SEP 117 Previsto 18 SEP-20 SEP 130/130/135 Media de 90 Días 17 SEP 127
V. Índices Geomagnéticos A
OBSERVED AFR/AP 16 SEP 002/004 ESTIMATED AFR/AP 17 SEP 004/010 PREDICTED AFR/AP 18 SEP-20 SEP 005/010-010/012-010/012
VI. Probabilidades de Actividad Geomagnética 18 SEP a 20 SEP
| A. Latitudes Medias | |||
|---|---|---|---|
| Activo | 10% | 20% | 25% |
| Tormenta Menor | 05% | 10% | 10% |
| Tormenta Mayor-Severa | 05% | 05% | 05% |
| B. Latitudes Altas | |||
|---|---|---|---|
| Activo | 20% | 25% | 25% |
| Tormenta Menor | 10% | 10% | 15% |
| Tormenta Mayor-Severa | 05% | 05% | 05% |
All times in UTC
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